MC79M05CDTRK

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The MC79M05CDTRK voltage regulator is an integrated circuit (IC) device under PMIC (Power Management IC) technology, specifically in the field of linear voltage regulators. It is a three-terminal negative regulator. The regulator provides an output voltage of -5V, an output current of up to 1A, and an output voltage range of -5V to -25V. It has an input voltage range of 2V to 15V and a fixed output accuracy of a ±2% variation over line and load conditions.

The MC79M05CDTRK regulator includes an internal current limiting and thermal protection features for prevention of damage and improved system stability. Internal current limit is set at 1A and does not require the use of an external current limiting resistor. Thermal shutdown temperature is set at 160C.

Quick response and accurate regulation are ensured by the MC79M05CDTRK for applications requiring stable voltage outputs such as medical supplies, automotive electronics, microprocessor-based systems.

The MC79M05CDTRK negative regulator works in a very simple and straightforward way. It takes an input voltage from the power source and maintains it at a constant value. The IC senses the input voltage and compares it with a preset reference voltage (Vref) which is a fixed value.

If the input voltage exceeds Vref, the error amplifier output will go low causing the P-channel MOSFET to turn off. As a result, this reduces the output current and maintains the output voltage. Similarly, if the input voltage is lower than Vref, the error amplifier output will go high causing the P-channel MOSFET to turn on. This increases the output current, which in turn brings up the output voltage.

By repeating this cycle, the output voltage is converted from the input voltage and is close to the reference voltage Vref. The output voltage is also held at this value since the device is connected in series in the power supply circuit.

Other features of the MC79M05CDTRK regulator include a low dropout voltage (maximum 2V), a high output current (more than 1A each regulator), low temperature drift and a fast transient response time. The device also has a wide supply voltage range of 2 V to 20 V, a wide operating temperature range of -40°C to 125°C, and high output power capability.

The MC79M05CDTRK regulator is an excellent choice for applications requiring a clean, low-noise, and reliable power solution in a small form factor. It comes in an SOT-223 surface mount package and is RoHS compliant. It can also be used for automotive, industrial, and medical applications where a reliable power source is needed.

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